Attachment to wheels.



113, r PatntedMy27,1913-.

2 sums-SHEET 1.

Winge-5.555 i t v INVENTQR.

` wyh,

-s'tructed -as hereinafter morevpart-icularly ding or sliding sidewise.

THOMAS TOWNEND, F WINNIPEGg MANITOBA, QANAIPA.

Locatie.

applic-tica mdiane 25, 1912. seriaiNa. 705.768.

To allechom, t may concern Be it known that I, THOMAS TowNEND,

of the city of `Winnipeg, in`the Province. of

Manitoba, Canada, have invented certain new and useful Improvements in Attachments to lVlieels, of which the "following is the specication. A

The invention relates to an attachment to wheels, particularly automobile wheels and the vobject of the'invention is to provide an inexpensive and durable device which can be quickly appliedto ay Wheel and which will eifectually prevent the wheel from skid- It consists essentially in a pluralityof spring controlled pivoted dogsor claws at# tachedto the wheel rim and means arranged 'to .engage with the vdogs and depress those adjoining the road surface toward the described.

l Figure 1 is a front view of a portion of `an automobile with my device attached to the wheel thereof, parts being shown in vertical section. Fig. 2 is a side elevation of the wheel with my device attached. Fig. 3 is an enlarged detailed sidevview of'a portion of the wheel showing several of the dogs. through the wheel, the section being taken `in the plane denoted by the line Fia. 3.

`,In the drawings like characters of reference indicate corresponding parts in each figure. f l' 1 represents the aXle of an automobile on which is mounted the usual wheel 2 supplied with the rim 3 and iniated tire 4. Y

5 represents a bar of angle-iron cross section secured to the inner side of the rim, 3 and fitted at suitable intervals with extendy ing lugs 6.

ATTACHMENT To WHEELS.V s! -v t l Speication of LettersPatent.

Fig. 4 is a vertical sectional Viewl i Pate nte( axle,which pin is formed with an enlarged -head 17 arranged to prevent the spring member frompassing too far down. The dogs are held normally in the position shown in full outline in Fig, 4 by the action of oppositely wound springs 19 and 20 disposed on the pins 9 and having their ends bearing on' the bar 5 and the arms 8. The wheel 13 is arranged in respect to the wheel 2 and the ground in such a manner that it will press these dogs which are on the lower "side of the rim downwardly so that their lower tips are brought to the lground level as the wheel 2 rotates'. This position of the said dogs is shown in Figs.' 1 and Q and in dotted outline in F ig. 4. soon asthe wheel 2 turns the dogs are depressed by the wheel 13 and are forced upwardly to the normal position by the action of the springs. In event of a car provided with my device skidding or slipping sidewise the depressed dogs will stick into the ground and in the initial skidding movement will cause the dogs to swing toward the tire. Accordingly the skidding will be immediately stopped. In event of the dogs engaging' with an obstruction they will rise and in rising will liftl the wheel 13, this motion being provided tor by the spring member 14.

' lVhat I claim as my invention is:-

1. The combination with a rotatably mounted automobile wheel provided with the usual rim and a pneumatic tire, and the axle supporting the wheel, of a bar secured to the inner side of the rim of the wheel, said bar being provided with pairs of extending lugs. similar dogs having extending arms pivotally secured .to the lugs. said dogs being provided on their inner sides with reinforcing ribs4 forming a runway, springs holding the dogs normally in a position within the circumference of the tire and an adjustable' wheel carried by the axle and designed to ride on the run-way formed by the backs of the ribs such wheel being provided to depress the dogs on the under side ofthe automobile wheel into a position beyond the circumference of the tire as the wheel rotates, as and for the purpose specified. v

2. The combination with a rotatably mounted automobile wheel-provided with the usual rim and a pneumatic tire, of a plurality of dogs piv'otally secured tothe rim of the Wheel, said dogs having a sub Signed at Winnipeg this 30th day of stantiaklxly iorizontxl lportioirl, Iieans fordnor- March 1912. I mall o1 ing sai cous o t e roun an i v T I adjurtable Wheel carried by theg axle and THOMAS TOXVNEB D' l' designed to ride said horizoncal port-ions to In the presence offorce said 'dogsoutwardly radially as the Gr. S. ROXBURGH,

Wheel rotates. L.. GoiJLD. 

